Book  (Jan 2000)  Page(s) 164.  
 
Birthday Herbaceous Peony. Saunders 1935. A cross between Paeonia lactiflora and P. peregrina 'Otto Froebel'. A single pink

Book  Page(s) 146.  
 
Albiflora x Otto Froebel
I used to distinguish between my original plant of Otto Froebel ....(O.F. No. 1) & the seedlings of it (2.3.4.5) but I do so no longer
1173-6 4 Venus x Otto Froebel

Book  Page(s) 148.  
 
1173-6 Venus x Otto Froebel seeds of 1918
...Birthday 1176 1924 June 19. bloom just like 1175 but probably better. A lovely shade of pink. 3-5 days later than O F [Otto Froebel]
1925 Semi-double. Perhaps the best of this year. 1926 June 30 ...